91994080 has 24 divisors (see below), whose sum is σ = 217336392. Its totient is φ = 36797568.

The previous prime is 91994069. The next prime is 91994093. The reversal of 91994080 is 8049919.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287322 + ... + 287641.

It is an arithmetic number, because the mean of its divisors is an integer number (9055683).

Almost surely, 2^91994080 is an apocalyptic number.

It is an amenable number.

91994080 is an abundant number, since it is smaller than the sum of its proper divisors (125342312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91994080 is a wasteful number, since it uses less digits than its factorization.

91994080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574978 (or 574970 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 91994080 is about 9591.3544403280. The cubic root of 91994080 is about 451.4260603701.

The spelling of 91994080 in words is "ninety-one million, nine hundred ninety-four thousand, eighty".